1978-04-28
1981-03-03
Smith, Jr., David
350276SL, 354246, G03B 932, G03B 940
Patent
active
042537550
ABSTRACT:
A camera focal plane shutter including longitudinally movable leading and trailing curtains is provided along the transverse border of one of the curtains with a transverse shield element projecting into and terminating along a line disposed in the path of the other curtain and functions to shield the objective lens traversing light obliquely incident in the area of the curtain overlapping portions. The shield element may be a transversely curved strip or loop integrally formed with or clamped to the respective curtain border by an edge defining channel member, or may be an extension of a respective channel member arm or may be a light weight bar bonded to the curtain member proximate its channel member clamped border.
REFERENCES:
patent: 1492357 (1924-04-01), Chamberlin
patent: 2134766 (1938-11-01), Shieber et al.
Fujii Akira
Kobori Toshio
Sekida Minoru
Teramoto Tougo
Minolta Camera Kabushiki Kaisha
Smith Jr. David
Wade Shelley
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